Quality Screw Machine Products, Inc. offers a wide array of screw machine and CNC machining services using our developing range of equipment. From our multiple-spindle bar machines using secondary milling and drilling operations as required. To our CNC Vertical and Swiss machines where we are evolving into a full service machine shop machining parts complete. Founded in 1987, St. Louis-based Quality Screw Machine Products continues to expand on its early days from a 5,000-square-foot building, it has grown into a 33,000 square-foot facility. The highly skilled setup personnel all have at least 10 years experience in the trade.